I will be starting the installation of Mastodon v4.2.0 on Masto.host.
This is a large update and I will be doing a slow rollout, meaning that I will release it gradually to batches of servers and monitor how it evolves before continuing.
Expected downtime during upgrade: 1 minute
Changelog: https://github.com/mastodon/mastodon/releases/tag/v4.2.0